Valve for mine-pumps.



No. 990,997. YPATENTED JUNE 16 1909.

' R. W. MURRAY.

VALVE FOR MINE PUMPS.

APPLICATION FILED. OUT. 19. 1907.

lmnntov Witnuom I Q UNITED STATES PATENT OFFICE.

ROBERT W. MURRAY, OF RENDVILLE, OHIO.

VALVE FOR MINE-PUMPS.

Specification of Letters Patent.

Patented June 16, 1908.

To all whom it may concern:

Be it known that 1, ROBERT W. MURRAY, 1 citizen of the United States,residing at Rendville, in the county of Perry and State of Ohio, haveinvented certain new and use ful Improvements in Valves for Mine-Pumps,of which the following is a specification.

My invention relates to pumps and more particularly to a construction ofvalve and valve chamber for pumps, whereby the life of the valve will begreatly prolonged and whereby said valves may be readily moved from, orplaced in position in the valve chambers.

Further objects and advantages of the invention will be set forth in thedetailed description which now follows.

In the accompanying drawing, Figure l is a portion of a pump partly inperspective and partly in section. Fig. 2 is a detail view illustratingclamping plates hereinafter described. Fig. 3 is an edge elevation ofthe valve disk and Fig. 4 is a plan view of the complete valve.

Like numerals designate corresponding parts in all of the figures of thedrawing.

' Referring to the drawing, the numeral 5 designates a portion of thewater end of a pump and 6 designates a port through which the waterpasses on its way to said pump. This port communicates with a valvechamber 7 and said port is controlled by a valve disk 8. It will be seenby referring to Fig. 3, that this valve disk which is preferably formedof rubber, though it may be formed of other material, comprises twoflat, circular members 9 which are connected by a shank 10. The clampingplates 11 are adapted to fit between the disks and engage the shank 10.These clamping plates have rearwardly extending portions 12 which areadapted to be clamped within a bar 13 whereby they are held in properrelation to each other, and in engagement with the shank 10. The ends ofthe bar 13 are reduced as at 14: to fit into blocks 15, the ends of thebar being pivotally mounted in these blocks. The wall of the valvechamber has been cut away as at 16 to form a recess for the reception ofthe block 15. It will be understood that the chamber is cut away in thisK151111161 upon each side thereof, and that each of the reduced ends 14of the bar 13 is mounted in a block 15. Plates 17 are adapted to besecured in position in recessed portions 18 of the pump end to close theopen side of the valve chambers. It will be seen that when these plateshave been removed, the blocks 15 withthe valves carried thereby, may beslipped bodily from the valve chambers and others substituted therefor.

The structure of valve herein shown and described is a particularlyadvantageous one for the reason that both sides thereof are adapted toengage the valve seat, for this valve may be readily inverted and whenso inverted, presents a new and unworn surface to the valve seat.

From the foregoing description it will be I seen that simple andefficient means are herein provided for accomplishing the ob jects ofthe invention but while the elements shown and described are welladapted to serve the purpose for which they are intended, it is to beunderstood that the invention is not limited to the precise constructionset forth, but includes within its purview such changes as may be madewithin the scope of the appended claims.

WVhat I claim is:

1. The combination with a pum and valve chamber thereof, of blocksshdably mounted in the walls of said valve chamber, a bar Cpivotallymounted in said blocks and eXten ing across said valve chamber and avalve carried by said bar, said valve having similar upper and lowerfaces to permit it to be used as a valve when inverted.

2. In a device of the character described, a valve comprising a pair ofdisks connected by a shank and a pair of plates adapted to engage saidshank and to lie between said disks, and a member to which said platesare secured, said member being adapted to hingedly support the valve andeither of said disks being adapted to engage a valve seat.

3., In a device of the character described, a valve comprising a pair ofrubber disks connected by a shank and a pair of plates adapted to liebetween said disks and to fit about said shank.

4. In a device of the character described, I I In testimony whereof Iaffix my signature a valve comprising a 1pair of rubber disks inpresence of two Witnesses. connected by a shan: a pair of plates adaptedto lie between said disks and to'fit i 7 ROBERT MURRAY about saidshank,and a member to which Witnesses: i said plates are secured; said memberbeing JOHN M. SWEENEY,

adapted to hingedly support said disks. GEORGE T. RODGERS.

